Patent US2128508A successfully refreshed from Google Patents.
US3608893A
Expired / Lapsed
US
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Signature feeders
Assignee: McCain Manufacturing Corp
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Filing: 1969-07-14
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Granted: 1971-09-28
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Expires: 1989-07-14
Abstract
Abstract Improved operation of a cyclically operable signature gathering machine is achieved by latching the gripper, which feeds a signature from a hopper, against the signature pile in response to a command signal that signatures are not to be fed from the hopper.
Inventors
- 👤 William B Mccain
- 👤 John Balla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:45
CPC Classifications
B; B65; B65H; B65H7/00; B65H7/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
In a cyclically operable signature-gathering machine where sheets are fed one by one from a hopper, eventually to be deposited on a conveyor for transportation to another station in the machine: gripper means operative in reverse strokes during repeating cycles of the machine to grip a sheet in the hopper at one end of a stroke and to withdraw the gripped signature from the hopper and to release the signature at the opposite end of the stroke incidental to the released signature being delivered to the conveyor, controls means for reversing the gripper at the opposite ends of its stroke, means to latch the gripper at an end of its stroke thereby to disable the gripper from feeding a signature, and means to operate the latch means only in response to a command signal so to do.
Claim 2
Dependent Claim
137 words
In a cyclically operable signature-gathering machine where sheets are fed one by one from a hopper, eventually to be deposited on a conveyor for transportation to another station in the machine: gripper means operative in reverse strokes during repeating cycles of the machine to grip a sheet in the hopper at one end of a stroke and to withdraw the gripped signature from the hopper and to release the signature at the opposite end of the stroke incidental to the released signature being delivered to the conveyor, controls means for reversing the gripper at the opposite ends of its stroke, means to latch the gripper at an end of its stroke thereby to disable the gripper from feeding a signature, and means to operate the latch means only in response to a command signal so to do.
Claim 3
Dependent Claim
21 words
A machine according to Claim 1 in which the latch means is effective on an operating lever which operates the gripper.
Claim 4
Dependent Claim
24 words
A machine according to Claim 2 in which said control means includes a cyclically operable cam engageable with a cam follower on said lever.
Claim 5
Dependent Claim
49 words
A machine according to Claim 1 in which the latch is carried by a latch arm operated by a solenoid, reverse strokes being imparted to the gripper by an operating lever, said operating lever having an element engageable by the latch, and cam means for reciprocating said operating lever.
Claim 6
Dependent Claim
138 words
In a cyclically operable signature-gathering machine where signatures or the like are fed one by one from a hopper, eventually to be deposited on a conveyor for transportation to another station in the machine: gripper means operative in repeated reverse strokes during repeating cycles of the machine to grip a signature in the hopper at one end of a stroke and to withdraw the gripped signature from the hopper and to release the signature at the opposite end of the stroke incidental to the released signature being delivered to the conveyor, control means for reversing the gripper at the opposite ends of its stroke, means to disable the gripper at an end of its stroke thereby to disable the gripper from feeding a signature, and means to operate the disabling means only in response to a command signal.
Claim 7
Dependent Claim
138 words
In a cyclically operable signature-gathering machine where signatures or the like are fed one by one from a hopper, eventually to be deposited on a conveyor for transportation to another station in the machine: gripper means operative in repeated reverse strokes during repeating cycles of the machine to grip a signature in the hopper at one end of a stroke and to withdraw the gripped signature from the hopper and to release the signature at the opposite end of the stroke incidental to the released signature being delivered to the conveyor, control means for reversing the gripper at the opposite ends of its stroke, means to disable the gripper at an end of its stroke thereby to disable the gripper from feeding a signature, and means to operate the disabling means only in response to a command signal.
References Cited (Backward Citations)
US3245682A
Cited
US3371331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |